lactation

The regulated release of milk from the mammary glands and the period of time that a mother lactates to feed her young.

parturition

The reproductive process in which the parent is separated from its offspring either by giving birth to live young or by laying eggs.

primary plasmodesma

A plasmodesma that consists of a simple, single channel; found predominantly in young tissue and formed as a function of cell plate formation during cytokinesis.

prolactin metabolic process

The chemical reactions and pathways involving prolactin, a protein hormone of the anterior pituitary gland that promotes lactation in response to the suckling stimulus of hungry young mammals.

multicellular organism development

The biological process whose specific outcome is the progression of a multicellular organism over time from an initial condition (e.g. a zygote or a young adult) to a later condition (e.g. a multicellular animal or an aged adult).

positive regulation of developmental process

Any process that activates or increases the rate or extent of development, the biological process whose specific outcome is the progression of an organism over time from an initial condition (e.g. a zygote, or a young adult) to a later condition (e.g. a multicellular animal or an aged adult).

regulation of developmental process

Any process that modulates the frequency, rate or extent of development, the biological process whose specific outcome is the progression of a multicellular organism over time from an initial condition (e.g. a zygote, or a young adult) to a later condition (e.g. a multicellular animal or an aged adult).

negative regulation of developmental process

Any process that stops, prevents or reduces the rate or extent of development, the biological process whose specific outcome is the progression of an organism over time from an initial condition (e.g. a zygote, or a young adult) to a later condition (e.g. a multicellular animal or an aged adult).

beak development

The progression of the beak over time from its initial formation until its mature state. The avian beak is an external anatomical structure, in the head region, that is adapted for feeding self and young, catching prey, probing, etc. It encompasses, but is not restricted to, the maxilla, mandible, maxillary rhamphotheca, mandibular rhamphotheca, nostril, nasal fossa, nasal bones, egg tooth and rictus.

beak morphogenesis

The process in which the anatomical structures of the beak are generated and organized. The avian beak is an external anatomical structure, in the head region, that is adapted for feeding self and young, catching prey, probing, etc. It encompasses, but is not restricted to, the maxilla, mandible, maxillary rhamphotheca, mandibular rhamphotheca, nostril, nasal fossa, nasal bones, egg tooth and rictus.